The sample sent to Sports Medicine Research & Testing Laboratory (SMRTL) returned positive; however, Quest Labs reported just the opposite.

From Twitter:

Source tells me there are conflicting fight night tests. SMRTL was positive (as SMRTL test was on 1/9) but Quest Labs did test same night close in time and Anderson was negative. SMRTL B sample being tested but results are not back yet. Either way, I would assume that Silva team will use the inconsistency of the two labs' results to discredit the SMRTL positive test dated 1/9 and also point to SMRTL negative test dated 1/19 in arguing to NSAC that results are unreliable or, alternatively, that he should get reduced sentence. If you are wondering, yes, this is similar to Nick Diaz case where Quest & SMRTL were also in conflict.

SMRTL is currently testing Silva's B-sample and the results are pending.

Silva has maintained his innocence in the wake of a failed steroid test (which prompted this), but must also answer for the out-of-competition drug test that returned positive for anti-anxiety medication. In the meantime, "The Spider" is temporarily suspended from UFC until this mess can be sorted out.